In that example, let us say the form ID is 1234, then it would become:
$args = array(
'post_type' => 'post',
'search_filter_id' => 1234,
'post_status' => 'future'
);
$query = new WP_Query( $args );
Using this method, it might be necessary to use the Custom Display method, you would have to test it out.
An alternative might be to find this part (or similar):
if (have_posts()) : while (have_posts()) : the_post();
We can use this:
https://www.designsandcode.com/documentation/search-filter-pro/action-filter-reference/#Query_Posts
For example:
do_action('search_filter_query_posts', 1234);
And put this in the line immediately preceding the if (have_posts()) ...
line.